I'm not doing this to steal your ideas or anything, I'm perfectly capable of making my own up or finding cool powers online.
So lets hear a power that you guys think is AWESOME but may or may not be thought of yet or used by any superheroes that we actually know.
Personally I think having glow in the dark blood would be friggin awesome!
Sadly, it would be a constant power that you couldn't control so if you were trying to hide in some dark place, you'd probably be screwed if you wern't hiding very well.